Simple Definition of vapor
: a substance that is in the form of a gas or that consists of very small drops or particles mixed with the air
Full Definition of vapor
1 : diffused matter (as smoke or fog) suspended floating in the air and impairing its transparency
2 a : a substance in the gaseous state as distinguished from the liquid or solid state b : a substance (as gasoline, alcohol, mercury, or benzoin) vaporized for industrial, therapeutic, or military uses; also : a mixture (as the explosive mixture in an internal combustion engine) of such a vapor with air
3 a : something unsubstantial or transitory : phantasm b : a foolish or fanciful idea
4 plural a archaic : exhalations of bodily organs (as the stomach) held to affect the physical or mental condition b : a depressed or hysterical nervous condition
Origin and Etymology of vapor
Middle English vapour, from Anglo-French vapor, from Latin, steam, vapor
First Known Use: 14th century
Examples of vapor in a sentence
<a faded Southern belle tiresomely vaporing about all the handsome beaux she had in her long-ago youth>
Did You Know?
Speakers of the English language, mindful of the lightness and unsubstantiality of floating air and gas, have put several airy words to good use over the years to describe the act of talking idly or boastfully. The earliest such word is blow (as in "he kept blowing about his new job"), which drifted into English sometime about 1400. Vapor wafted into the language in the 1620s, and a little over 200 years later windbags, later also known as gasbags, not only blew and vapored but also gassed about anything they could.
First Known Use of vapor
VAPOR Defined for Kids
Definition of vapor for Students
1 : fine bits (as of fog or smoke) floating in the air and clouding it
2 : a substance in the form of a gas <water vapor>
Medical Definition of vapor
1a: a substance in the gaseous state as distinguished from the liquid or solid stateb: a substance (as alcohol or benzoin) vaporized for industrial, therapeutic, or military uses
2vapors or chiefly British vapours plural a: exhalations of bodily organs (as the stomach) formerly held to affect the physical or mental conditionb: a depressed or hysterical nervous condition
Seen and Heard
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